Feature: 1. 35MM STANDARD RAIL MOUNTING: Dual power automatic switch is a miniature household power switch, mainly used to test whether the main power or backup power is normal, dedicated for PZ30 distribution box. 2. MILLISECOND LEVEL: When the normal power supply is abnormal, the backup power supply works immediately, and our automatic transfer switch can achieve millisecond switching to achieve the effect of non stop power supply. 3. PC AND SILVER CONTACTS: The dual power supply automatic transfer switch is made of PC flame retardant plastic material, which is well insulated, high temperature resistant, anti aging, safe and reliable, and uses silver contacts. 4. TWO OPERATION MODES: The dual power supply automatic transfer switch can be operated automatically or manually, with compact structure, reliable transmission and easy installation and maintenance. 5. WIDELY USED: The power automatic switch switches to standby power when the power goes out and to the main power when it comes in. It is suitable for emergency power supply systems of 50 or 60Hz AC rated 220V, such as factories, shopping center, nurseries and other places. Specification: Item Type: Double Power Automatic Transfer Switch Material: PC, Silver Rated Current Le: 80A Insulation Voltage Ui: AC690V Rated Voltage Ue: AC400V Frequency: 50 60HZ Rated Control Voltage US: 220VAC 85%Us-110%Us Grade: PC Grade Specification: 4P Life Span Electrical: 2000 Times Mechanical: 5000 Times Rated Short Circuit Current: 50kA Fuse: RT16 00 63A Rated Impulse Withstand Voltage: 8kV Auxiliary Circuit: Two Relays, Each Relay Has Two Sets Of Contact Capacity: AC220V50HZ Le 5y Touch Time: <50ms Operation Conversion Time: <50ms Return Time: <50ms Closing Time: <50ms. Package List: 1 x Dual Power Automatic Transfer Switch1 x Instruction Manual Note: 1. The maximum surrounding temperature shall not exceed 40℃, the minimum shall not be lower than ‑5℃, and the average temperature within 24 hours shall not be higher than 35℃.2. The altitude of the installation site should not be higher than 2000m.3. When the maximum temperature reaches 40℃, the relative humidity of the installation site should not exceed 50%; when the temperature is the lowest temperature ‑5℃, the relative humidity is higher, for example, the temperature is 25℃, and the relative humidity is 90%. Due to temperature changes, special measures should be taken to deal with the occasional condensation on the face of the product.